CI/CD Pipeline error: unsupported Compose file version: 1.0

GitLab CI/CD
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1

Since a few days i get the following error “unsupported Compose file version: 1.0” when deploying CI/CD without doing anything it suddenly doesn’t work anymore, does anyone have an idea?

docker-compose file:

version: "3.7"
services:
  km:
    container_name: ${SERVICE_NAME}
    build: .
    image: ${IMAGE}

    environment:
      - WEB_DOCUMENT_ROOT=/var/www/public
    deploy:
      mode: replicated
      replicas: 1
      restart_policy:
        condition: on-failure
      labels:
        caddy: ${CADDY_DOMAIN}
        caddy.reverse_proxy: "{{upstreams 80}}"
networks:
  default:
    external:
      name: caddy_caddy